InChI=1S/C22H20O12/c1-6-3-7-11(15(25)12-8(13(7)23)5-10(32-2)14(24)16(12)26)9(4-6)33-22-19(29)17(27)18(28)20(34-22)21(30)31/h3-5,17-20,22,24,26-29H,1-2H3,(H,30,31)